Detectives have arrested two men in connection with the murder of Lyra McKee.
The teenagers have both been taken to Musgrave Serious Crime Suite.
They have been arrested under the Terrorism act.
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A PSNI spokesman said: "Major Investigation Team detectives have arrested two men, aged 18 and 19 under the Terrorism Act, in connection with the murder of Lyra McKee in the Creggan area of Derry on Thursday, 18th April.
"They have been taken to Musgrave Serious Crime Suite."
The 29-year-old North Belfast woman was at the scene reporting on rioting on Thursday night when she was shot.
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